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An integrated routing and distributed scheduling approach for hybrid IEEE 802.16e mesh networks for vehicular broadband communications.

机译：用于车辆宽带通信的混合IEEE 802.16e网状网络的集成路由和分布式调度方法。

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摘要

An integrated routing and distributed scheduling approach for fast deployable IEEE 802.16e networks is presented where distributed base stations with dual radios form a mesh backhaul and subscriber stations communicate through these base stations. The mesh backhaul is formed via an IEEE 802.16e mesh mode radio on each base station, while the subscriber stations communicate with base stations via PMP mode radios. The proposed routing scheme divides the deployed network into several routing zones. Each routing zone contains several base stations that form the mesh backhaul with one base station equipped with either a fiber, satellite or any other point-to-point backhaul link to reach a gateway on the core network (for example, Internet or Enterprise Network). Traffic from the subscriber stations is routed by the serving base station through the mesh to the gateway-connected base station using min-hop routing metric. Mobile IP scheme is used to assign a care-of address to a subscriber station that moves from one routing zone to the other, thereby avoiding a change in IP address for network layer applications. The scheduling approach consists of two phases. In the first phase, a centralized mesh scheduling algorithm is applied with collected information on network topology, radio parameters, and initial QoS provisioning requirements. At the same time, each base station derives a PMP schedule for actual demands from associated subscriber stations constrained by the initial mesh schedule. In the second phase, each base station monitors its carried PMP traffic load statistics; to accommodate traffic load changes in a distributed fashion, each base station lends or borrows time slots from neighboring base stations to adjust its mesh and PMP radio schedules. The distributed schedule adaptation method not only allows individual base stations to accommodate short-term increases in bandwidth demands, it also provides the means for optimizing the mesh and PMP schedules with respect to actual bandwidth demands. Several deployment strategies are considered and an analytical model is developed to identify the achievable increase in overall network throughput using the proposed scheduling approach. Simulations are run in network simulator ns-2 to verify results obtained using the analytical model.
机译：提出了一种用于可快速部署的IEEE 802.16e网络的集成路由和分布式调度方法，其中具有双射频的分布式基站形成网状回程，而用户站则通过这些基站进行通信。网格回程是通过每个基站上的IEEE 802.16e网格模式无线电形成的，而用户站则通过PMP模式无线电与基站进行通信。所提出的路由方案将部署的网络划分为几个路由区域。每个路由区域均包含多个基站，这些基站形成网状回程，而一个基站则配备有光纤，卫星或任何其他点对点回程链路，以到达核心网络（例如Internet或企业网络）上的网关。 。服务基站通过最小跳路由度量，将来自订户站的流量通过网状网络路由到连接网关的基站。移动IP方案用于将转交地址分配给从一个路由区移动到另一个路由区的用户站，从而避免了网络层应用程序IP地址的更改。调度方法包括两个阶段。在第一阶段，将集中式网格调度算法与收集的有关网络拓扑，无线电参数和初始QoS设置要求的信息一起应用。同时，每个基站从受初始网格调度约束的相关联的用户站中导出针对实际需求的PMP调度。在第二阶段，每个基站监视其承载的PMP流量负载统计信息；为了以分布式方式适应业务负载变化，每个基站借用或借用相邻基站的时隙来调整其网格和PMP无线电调度。分布式调度适配方法不仅允许各个基站适应带宽需求的短期增长，而且还提供了针对实际带宽需求优化网状和PMP调度的手段。考虑了几种部署策略，并开发了一种分析模型，以使用建议的调度方法来确定总体网络吞吐量可实现的增长。在网络模拟器ns-2中运行仿真，以验证使用分析模型获得的结果。

著录项

  • 作者

    Amin, Rahul N.;

  • 作者单位

    Clemson University.;

  • 授予单位 Clemson University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2008
  • 页码 71 p.
  • 总页数 71
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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